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單項(xiàng)選擇題

Under tropical conditions, control valves have fully opened, but the room still hot.What measures can be taken in such a case?（）

A.Keep the plant running all time
B.Start another blower
C.Increase the ratio of circulated to fresh air
D.Reduce the seawater flow to the condenser

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單項(xiàng)選擇題

Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）

A.dirty delivery ducts
B.too much refrigerant
C.the fouling filters
D.high temperature outside

單項(xiàng)選擇題

（）is used in typical marine pattern self-contained unit.

A.a water cooled condenser
B.a slop tank
C.a expansion tank
D.a centrifugal pump

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